Car bombs hit Baghdad; 47 killed in violence

Car bombs struck mostly Shiite targets in Baghdad on Wednesday, and the bodies of three Sunni professors and a student were found days after they were seized while leaving their campus in a Shiite part of the city. At least 47 people were reported killed across the country, including a US soldier. A mortar attack also struck a predominantly Sunni neighborhood in northern Baghdad, killing six people and wounding 20, police and hospital officials said. The violence underscored the extreme difficulties facing the capital's 6 million residents as they try to go about their daily business even as US and Iraqi forces gear up for a planned security sweep to clear the city of Sunni insurgents and Shiite militias who are blamed in many of the attacks.